Posted: 18/07/2014 at 15:54
Assuming you are moving it to the ground, the one in the pot can be moved at any time as long as it is well watered first to ensure the root ball is thoroughly moistened. You'll need to keep it watered till the autumn rains start to ensure it doesn't go thirsty while it's growing new roots into the surrounding soil.
If you want to move it to a bigger pot that can also be done now and, again, it needs plenty of water and you will have to provide nutrients with good quality compost and top ups of fertiliser every spring.
For the one in the ground, like any shrub, it is best moved in autumn once it has dropped its leaves and gone dormant. The soil will still be warm enough for it to grow new roots over the winter and produce a good display next spring and summer. As before, water well before and after planting.